Application of green self-degradable crosslinked gel in plugging of geothermal well DR2024 in Xining city

Application of green self-degradable crosslinked gel in plugging of geothermal well DR2024 in Xining city
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                        xiongzhengqiang1xiongzhengqiang
Beijing Institute of Exploration Engineering
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zouzhife1zouzhife
Beijing Institute of Exploration Engineering
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zhengyuxuan2zhengyuxuan
The Second Institute of Hydrogeology and Engineering Geology，Shandong Provincial Bureau of Geology ＆ Mineral Resources
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yuanbaohong2yuanbaohong
The Second Institute of Hydrogeology and Engineering Geology，Shandong Provincial Bureau of Geology ＆ Mineral Resources
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Affiliation:1.Beijing Institute of Exploration Engineering;2.The Second Institute of Hydrogeology and Engineering Geology，Shandong Provincial Bureau of Geology ＆ Mineral Resources
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Abstract:

The problem of lost circulation occurs frequently during geothermal well exploration and development, especially the total loss of geothermal reservoir. Lost circulation brings about wellbore stability and drilling efficiency. Geothermal DR2024 well is located in Xining city, Qinghai Province, which is a geothermal mining well. When drilling to the non-target geothermal reservoir well section of 714m to 759m, the total loss occurred.

Key words:crosslinked gel; geothermal well; lost circulation treatment; geothermal reservoir; self-degradable; environmental protective performance

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Received:February 19,2025
Revised:April 03,2025
Adopted:April 07,2025
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